Last updated: March 2026
Keep your aquatic friends healthy with precise water parameters
Enter your test results to check if levels are safe for your fish.
| Parameter | Freshwater | Saltwater | Planted |
|---|---|---|---|
| Ammonia (NH₃) | 0 ppm | 0 ppm | 0 ppm |
| Nitrite (NO₂) | 0 ppm | 0 ppm | 0 ppm |
| Nitrate (NO₃) | < 40 ppm | < 20 ppm | < 20 ppm |
| pH | 6.5 - 7.5 | 8.1 - 8.4 | 6.5 - 7.2 |
Calculate how much pH buffer you need to reach your target pH.
Your water's KH (carbonate hardness) determines pH stability. Low KH = unstable pH. Consider testing and adjusting KH before chasing pH numbers.
Calculate how much water to change to reach your target parameters.
| Scenario | Recommended |
|---|---|
| Lightly stocked tank | 10-15% weekly |
| Moderately stocked | 20-25% weekly |
| Heavily stocked | 30-50% weekly |
| Ammonia/Nitrite spike | 50% immediately, then 25% daily |
| New tank cycling | 10-20% if ammonia > 1ppm |
Calculate the correct medication dose for your tank.
White spot disease (Ich)
Bacterial infections, fin rot
Fungal infections
Parasites, hex, hole-in-head
Bacterial infections, cloudy eye
Parasites, stress, mild infections
Fungus, external parasites, eggs
Flukes, tapeworms, flatworms
Convert between Fahrenheit and Celsius for aquarium heating.
| Fish Type | °F | °C |
|---|---|---|
| Tropical Community | 75-80°F | 24-27°C |
| Betta Fish | 78-82°F | 26-28°C |
| Goldfish | 65-72°F | 18-22°C |
| Discus | 82-86°F | 28-30°C |
| African Cichlids | 76-82°F | 24-28°C |
| Marine/Reef | 75-78°F | 24-26°C |
| Shrimp (Neocaridina) | 68-78°F | 20-26°C |
| Axolotl | 60-68°F | 16-20°C |